INA185 Ultra-small (SOT-563) precision, high-speed current sense amplifier | TI.com

INA185 (ACTIVE) Ultra-small (SOT-563) precision, high-speed current sense amplifier

 

Description

The INA185 current sense amplifier is designed for use in cost-sensitive space constrained applications. This device is a bidirectional, current-sense amplifier (also called a current-shunt monitor) that senses voltage drop across a current-sense resistor at common-mode voltages from –0.2 V to +26 V, independent of the supply voltage. The INA185 integrates a matched resistor gain network in four, fixed-gain device options: 20 V/V, 50 V/V, 100 V/V, or 200 V/V. This matched gain resistor network minimizes gain error and reduces the temperature drift.

The INA185 operates from a single 2.7-V to 5.5-V power supply. The device draws a maximum supply current of 260 µA and features high slew rate and bandwidth making this device an excellent choice for many power-supply and motor-control applications.

The INA185 is available in a low profile 6-pin, SOT-563 package, and has a body size of size of only 2.56 mm2, including the device pins. All device options are specified over the extended operating temperature range of –40°C to +125°C.

Features

  • SOT-563 package (1.6 mm × 1.6 mm)
    • 39% smaller footprint than SC70
    • 0.55 mm package height
  • Common-mode range (VCM): –0.2 V to +26 V
  • High bandwidth: 350 kHz (A1 devices)
  • Offset voltage:
    • ±55 µV (max) at VCM = 0 V
    • ±100 µV (max) at VCM = 12 V (A4 device)
  • Output slew rate: 2 V/µs
  • Bidirectional current-sensing capability
  • Accuracy:
    • ±0.2% maximum gain error (A1, A2, A3)
    • 0.5-µV/°C maximum offset drift
  • Gain options:
    • 20 V/V (A1 devices)
    • 50 V/V (A2 devices)
    • 100 V/V (A3 devices)
    • 200 V/V (A4 devices)
  • Quiescent current: 260 µA (max)

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Parametrics

Compare all products in Current sense amplifiers analog output Email Download to Excel
Part number Order Common mode voltage (Max) (V) Common mode voltage (Min) (V) Input offset (+/-) (Max) (uV) Input offset drift (+/-) (Typ) (uV/C) Gain (V/V) Gain error (%) Gain error drift (+/-) (Max) (ppm/°C) CMRR (Min) (dB) Bandwidth (kHz) Supply voltage (Max) (V) Supply voltage (Min) (V) Iq (Max) (mA) Number of channels (#) Comparators (#) Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
INA185 Order now 26     -0.2     55     0.2     100
20
200
50    
0.2     8     96     350
210
150
105    
5.5     2.7     0.3     1       Bi-directional
Low-side Capable    
Catalog     -40 to 125     SOT-5X3 | 6     6SOT-5X3: 2 mm2: 1.2 x 1.6 (SOT-5X3 | 6)    
INA180 Order now 26     -0.2     150     0.2     100
20
200
50    
1     20     84     350
210
150
105    
5.5     2.7     0.3     1     0     Low-side Capable     Catalog     -40 to 125     SOT-23 | 5     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
INA181 Order now 26     -0.2     150     0.2     100
20
200
50    
1     20     84     350
210
150
105    
5.5     2.7     0.3     1     0     Bi-directional
Low-side Capable    
Catalog     -40 to 125     SOT-23 | 6     6SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 6)    
INA199 Order now 26     -0.1     150     0.1     100
200
50    
1.5
1    
10     100     80
30
14    
26     2.7     0.115     1     0     Bi-directional
Low-side Capable    
Catalog     -40 to 125     SC70 | 6
UQFN | 10    
6SC70: 4 mm2: 2.1 x 2 (SC70 | 6)
10UQFN: 3 mm2: 1.4 x 1.8 (UQFN | 10)